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Public Types | Public Member Functions

LinearizedTrackState< N > Class Template Reference

#include <LinearizedTrackState.h>

Inheritance diagram for LinearizedTrackState< N >:
ReferenceCounted

List of all members.

Public Types

typedef ROOT::Math::SMatrix
< double, N-2,
3, ROOT::Math::MatRepStd
< double, N-2, 3 > > 
AlgebraicMatrixM3
typedef ROOT::Math::SMatrix
< double, N,
3, ROOT::Math::MatRepStd
< double, N, 3 > > 
AlgebraicMatrixN3
typedef ROOT::Math::SMatrix
< double, N, N-2,
ROOT::Math::MatRepStd< double,
N, N-2 > > 
AlgebraicMatrixNM
typedef ROOT::Math::SMatrix
< double, N-2, N-2,
ROOT::Math::MatRepSym< double,
N-2 > > 
AlgebraicSymMatrixMM
typedef ROOT::Math::SMatrix
< double, N, N,
ROOT::Math::MatRepSym< double,
N > > 
AlgebraicSymMatrixNN
typedef ROOT::Math::SMatrix
< double, N+1, N+1,
ROOT::Math::MatRepSym< double,
N+1 > > 
AlgebraicSymMatrixOO
typedef ROOT::Math::SVector
< double, N-2 > 
AlgebraicVectorM
typedef ROOT::Math::SVector
< double, N > 
AlgebraicVectorN
typedef
ReferenceCountingPointer
< RefittedTrackState< N > > 
RefCountedRefittedTrackState

Public Member Functions

virtual TrackCharge charge () const =0
virtual void checkParameters (AlgebraicVectorN &parameters) const
virtual std::vector
< ReferenceCountingPointer
< LinearizedTrackState< N > > > 
components () const =0
virtual const AlgebraicVectorNconstantTerm () const =0
virtual
RefCountedRefittedTrackState 
createRefittedTrackState (const GlobalPoint &vertexPosition, const AlgebraicVectorM &vectorParameters, const AlgebraicSymMatrixOO &covarianceMatrix) const =0
virtual bool hasError () const =0
virtual bool isValid () const
virtual const GlobalPointlinearizationPoint () const =0
virtual const AlgebraicMatrixNMmomentumJacobian () const =0
virtual bool operator== (LinearizedTrackState< N > &other) const =0
virtual const AlgebraicVectorNparametersFromExpansion () const =0
virtual const AlgebraicMatrixN3positionJacobian () const =0
virtual AlgebraicSymMatrixNN predictedStateError () const =0
virtual AlgebraicSymMatrixMM predictedStateMomentumError () const =0
virtual AlgebraicVectorM predictedStateMomentumParameters () const =0
virtual AlgebraicVectorN predictedStateParameters () const =0
virtual AlgebraicSymMatrixNN predictedStateWeight (int &error) const =0
virtual AlgebraicVectorN refittedParamFromEquation (const RefCountedRefittedTrackState &theRefittedState) const =0
virtual
ReferenceCountingPointer
< LinearizedTrackState< N > > 
stateWithNewLinearizationPoint (const GlobalPoint &newLP) const =0
virtual reco::TransientTrack track () const =0
virtual double weightInMixture () const =0
virtual ~LinearizedTrackState ()

Detailed Description

template<unsigned int N>
class LinearizedTrackState< N >

Abstract base class for all kind of linearizedtrack like objects. Calculates and stores the ImpactPointMeasurement of the impact point (point of closest approach in 3D) to the given linearization point. (see V.Karimaki, HIP-1997-77 / EXP)

Computes the parameters of the trajectory at the transverse point of closest approach (in the global transverse plane) to the linearization point, and the jacobiam matrices. (see R.Fruehwirth et al. Data Analysis Techniques in HEP Experiments Second Edition, Cambridge University Press 2000, or R.Fruehwirth et al. Vertex reconstruction and track bundling at the LEP collider using robust algorithms. Computer Physics Communications 96 (1996) 189-208).

Definition at line 37 of file LinearizedTrackState.h.


Member Typedef Documentation

template<unsigned int N>
typedef ROOT::Math::SMatrix<double,N-2,3,ROOT::Math::MatRepStd<double,N-2,3> > LinearizedTrackState< N >::AlgebraicMatrixM3

Definition at line 45 of file LinearizedTrackState.h.

template<unsigned int N>
typedef ROOT::Math::SMatrix<double,N,3,ROOT::Math::MatRepStd<double,N,3> > LinearizedTrackState< N >::AlgebraicMatrixN3

Definition at line 43 of file LinearizedTrackState.h.

template<unsigned int N>
typedef ROOT::Math::SMatrix<double,N,N-2,ROOT::Math::MatRepStd<double,N,N-2> > LinearizedTrackState< N >::AlgebraicMatrixNM

Definition at line 44 of file LinearizedTrackState.h.

template<unsigned int N>
typedef ROOT::Math::SMatrix<double,N-2,N-2,ROOT::Math::MatRepSym<double,N-2> > LinearizedTrackState< N >::AlgebraicSymMatrixMM

Definition at line 47 of file LinearizedTrackState.h.

template<unsigned int N>
typedef ROOT::Math::SMatrix<double,N,N,ROOT::Math::MatRepSym<double,N> > LinearizedTrackState< N >::AlgebraicSymMatrixNN

Definition at line 46 of file LinearizedTrackState.h.

template<unsigned int N>
typedef ROOT::Math::SMatrix<double,N+1,N+1,ROOT::Math::MatRepSym<double,N+1> > LinearizedTrackState< N >::AlgebraicSymMatrixOO

Definition at line 48 of file LinearizedTrackState.h.

template<unsigned int N>
typedef ROOT::Math::SVector<double,N-2> LinearizedTrackState< N >::AlgebraicVectorM

Definition at line 42 of file LinearizedTrackState.h.

template<unsigned int N>
typedef ROOT::Math::SVector<double,N> LinearizedTrackState< N >::AlgebraicVectorN

Definition at line 41 of file LinearizedTrackState.h.

Definition at line 50 of file LinearizedTrackState.h.


Constructor & Destructor Documentation

template<unsigned int N>
virtual LinearizedTrackState< N >::~LinearizedTrackState ( ) [inline, virtual]

Definition at line 52 of file LinearizedTrackState.h.

{}

Member Function Documentation

template<unsigned int N>
virtual TrackCharge LinearizedTrackState< N >::charge ( ) const [pure virtual]
template<unsigned int N>
virtual void LinearizedTrackState< N >::checkParameters ( AlgebraicVectorN parameters) const [inline, virtual]

Reimplemented in ParticleKinematicLinearizedTrackState.

Definition at line 134 of file LinearizedTrackState.h.

        {}
template<unsigned int N>
virtual std::vector< ReferenceCountingPointer<LinearizedTrackState<N> > > LinearizedTrackState< N >::components ( ) const [pure virtual]
template<unsigned int N>
virtual const AlgebraicVectorN& LinearizedTrackState< N >::constantTerm ( ) const [pure virtual]

Method returning the constant term of the Taylor expansion of the measurement equation

Implemented in PerigeeMultiLTS, ParticleKinematicLinearizedTrackState, and PerigeeLinearizedTrackState.

template<unsigned int N>
virtual RefCountedRefittedTrackState LinearizedTrackState< N >::createRefittedTrackState ( const GlobalPoint vertexPosition,
const AlgebraicVectorM vectorParameters,
const AlgebraicSymMatrixOO covarianceMatrix 
) const [pure virtual]

Creates the correct refitted state according to the results of the track refit.

Implemented in PerigeeMultiLTS.

template<unsigned int N>
virtual bool LinearizedTrackState< N >::hasError ( ) const [pure virtual]
template<unsigned int N>
virtual bool LinearizedTrackState< N >::isValid ( void  ) const [inline, virtual]

Reimplemented in PerigeeLinearizedTrackState.

Definition at line 144 of file LinearizedTrackState.h.

{ return true; }
template<unsigned int N>
virtual const GlobalPoint& LinearizedTrackState< N >::linearizationPoint ( ) const [pure virtual]
template<unsigned int N>
virtual const AlgebraicMatrixNM& LinearizedTrackState< N >::momentumJacobian ( ) const [pure virtual]

Method returning the Momentum Jacobian from the Taylor expansion (Matrix B)

Implemented in PerigeeMultiLTS, ParticleKinematicLinearizedTrackState, and PerigeeLinearizedTrackState.

template<unsigned int N>
virtual bool LinearizedTrackState< N >::operator== ( LinearizedTrackState< N > &  other) const [pure virtual]

Method returning the impact point measurement

template<unsigned int N>
virtual const AlgebraicVectorN& LinearizedTrackState< N >::parametersFromExpansion ( ) const [pure virtual]

Method returning the parameters of the Taylor expansion

Implemented in PerigeeMultiLTS, ParticleKinematicLinearizedTrackState, and PerigeeLinearizedTrackState.

template<unsigned int N>
virtual const AlgebraicMatrixN3& LinearizedTrackState< N >::positionJacobian ( ) const [pure virtual]

Method returning the Position Jacobian from the Taylor expansion (Matrix A)

Implemented in PerigeeMultiLTS, ParticleKinematicLinearizedTrackState, and PerigeeLinearizedTrackState.

template<unsigned int N>
virtual AlgebraicSymMatrixNN LinearizedTrackState< N >::predictedStateError ( ) const [pure virtual]

Method returning the covariance matrix of the track state at the linearization point.

Implemented in PerigeeMultiLTS, ParticleKinematicLinearizedTrackState, and PerigeeLinearizedTrackState.

template<unsigned int N>
virtual AlgebraicSymMatrixMM LinearizedTrackState< N >::predictedStateMomentumError ( ) const [pure virtual]

Method returning the momentum covariance matrix of the track state at the transverse impact point.

Implemented in PerigeeMultiLTS, ParticleKinematicLinearizedTrackState, and PerigeeLinearizedTrackState.

template<unsigned int N>
virtual AlgebraicVectorM LinearizedTrackState< N >::predictedStateMomentumParameters ( ) const [pure virtual]

Method returning the momentum part of the parameters of the track state at the linearization point.

Implemented in PerigeeMultiLTS, ParticleKinematicLinearizedTrackState, and PerigeeLinearizedTrackState.

template<unsigned int N>
virtual AlgebraicVectorN LinearizedTrackState< N >::predictedStateParameters ( ) const [pure virtual]

Method returning the parameters of the track state at the linearization point.

Implemented in PerigeeMultiLTS, ParticleKinematicLinearizedTrackState, and PerigeeLinearizedTrackState.

template<unsigned int N>
virtual AlgebraicSymMatrixNN LinearizedTrackState< N >::predictedStateWeight ( int &  error) const [pure virtual]

Method returning the weight matrix of the track state at the linearization point. The error variable is 0 in case of success.

Implemented in PerigeeMultiLTS, ParticleKinematicLinearizedTrackState, and PerigeeLinearizedTrackState.

template<unsigned int N>
virtual AlgebraicVectorN LinearizedTrackState< N >::refittedParamFromEquation ( const RefCountedRefittedTrackState theRefittedState) const [pure virtual]

Method returning the parameters of the Taylor expansion evaluated with the refitted state.

Implemented in PerigeeMultiLTS, ParticleKinematicLinearizedTrackState, and PerigeeLinearizedTrackState.

template<unsigned int N>
virtual ReferenceCountingPointer<LinearizedTrackState<N> > LinearizedTrackState< N >::stateWithNewLinearizationPoint ( const GlobalPoint newLP) const [pure virtual]

Returns a new linearized state with respect to a new linearization point. A new object of the same type is returned, without change to the existing one.

Implemented in PerigeeMultiLTS, ParticleKinematicLinearizedTrackState, and PerigeeLinearizedTrackState.

template<unsigned int N>
virtual reco::TransientTrack LinearizedTrackState< N >::track ( ) const [pure virtual]
template<unsigned int N>
virtual double LinearizedTrackState< N >::weightInMixture ( ) const [pure virtual]